Button-hole sewing-machine



(No Model.) Z-Sheets-Sheet 1.

' J. Q. A. HOUGHTON.

BUTTON HOLE SEWING MACHINE.

Patented Mar. 24, 1891.

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(No Model.) 2 sheets -shet 2. J Q A HOUGHTON BUTTON HOLE SEWING MACHINE.

No. 449,074. Patented Mar. 24, 1891.

U'LII E E5555- JOHN Q. A. IlOUGI-ITON, OE IVASHINGTON, DISTRICT OF MANUFACTURING COMPANY TO THE SINGER OOLU BUTTON-HOLE SEWING-MACHINE.

SPECIFICATION forming part of Letters Pate Divided and this Original application filed February 3, 1887, Serial No. 226,336.

364,870. (No model.)

To all whom it may concern:

Be it known that I, JOHN Q. A. I'IOUGHTON, a citizen of the United States, formerly of Baltimore, Maryland, but now residing at ashington, in the District of Columbia, have invented certain new and useful Improvements in Button-Hole Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This application is a division of my application, N 0. 226,336, filed February 3, 1887.

The object of my invention is to provide a simple automatically-operating mechanism for forming barring-stitches across the ends of eyed button-holes when they have been otherwise completed. 4

'To this end my invention consists in certain combinations of parts, as will be hereinafter indicated by the claims appended to this specification, by which the button by which the work-clamp is guided is reciprocated to cause said work-clamp to be moved back and forth across its line of feed to form barringstitches across the ends of the button-holes.

In the drawings, Figure 1 is a side view of a button-hole sewing-machine with my invention applied thereto. Fig. 2 is a plan view of the work-plate thereof with the work-clamp removed and with the vertical shaft and the vertical portion of the arm in section. Fig. 3 is a plan view of the work-clamp and of the forward end of the operating-rod. Fig. at is an elevation of the worloclamp, showing the operating-rod in section; and Fig. 5 is a detail end View of the work-plate, showing the button-carrying slide in section and its operating-lever in elevation.

In the machine herein shown the bed-plate A, work-plate A, arm B, driving-shaft O, vertical shaft D, gears c and (Z, connecting said shafts, cam E 011 said vertical shaft, horizontally-moving needle-head F, needle-bar G, needle g, and connections H h between said needle-head and cam are or may be of any well-known form. Any usual looping mechanism co-operating with the needle and any common form of work-clamp feeding mechanism may also be employed.

The work-plate A has the usual slot a, through which passes the guidingordinary MBIA, ASSIGNOR OF NEIV JERSEY.

n17 N 0. 449,074, dated March 24, 1891.

application filed September 13, 1890- Serial No.

feeding-pin P of the work-clamp O. J is the guiding-button for the work-clamp, and said button, instead of being fixed to the workplate, as is usual, is mounted on a sliding plate I, movable in ways said plate I having a p in the work-plate, in. 1, against which presses a spring 2" to hold said plate stationary, except when it is to be positively reciprocated.

to a rod M, having at its at to receive a pin n at t ver N, pivoted to forward end a slot he rear end of a lethe work-plate and jointed at its forward end to the sliding plate J.

The slot m is wide enough at its outer end so that the rod M may reciprocate without striking the pin 71; but rearward, so that of said slot comes ment of the said rod will lever N, and thus to the ing-button J, to reciproc work-clamp.

The rod M is normally when the said rod is moved the inner or narrower opposite said pin, the movepart be imparted to the plateI and the guidate or vibrate the 75 held in the position shown in Fig. 2 by the spring m,which presses said rod against the stop -pin m WVhen in this position the wide outer part of the slot at registers with the pin a of the lever N.

The work-clamp O is provided with an extension 0, having a dependin g pin or roller-stud 0, and when in theoperation of the machine the last side of the button-hole is nearly finished the said pin or roller-stud will come in contact with the operatin said rod rearward agains spring m, so that the M and move stress of the g-rod t the narrow part of the slot m will come opposite the pin a, and the movement of the said operating-rod will be imparted 0 to the lever N,

and the plate I thus reciprocating the latter and the button J, carried thereby,andtherebyvibratingthework-clamp on its feeding-pin P as a ring-stitches across the end of the parts being so timed vibrating movements of the opposition to the horizontal needle-bar and needle to stitches long enough to ex center to form barthebutton-hole, that the lateral or clamp will be in movements of the make the barringtend entirelyacross IOO the two rows of stitches at the end of the button-hole. \Vh en three or fourbarring-stitches have been made, the machine will be stopped either by the operator or automatically by any well-known or suitable stopping mechanism.

1 do not claim, broadly, the combination, with a button-hole-stitch-formin g mechanism and work-clamp, of a movable guiding-button which is reciprocatcd laterally to vibrate or reciprocate said workclamp to form barringstitches across the ends of worked buttonholes; but

hat I do claim, Letters Patent, is-

1. In a button-hole sewing-machine, the combination, with a stitch-forming mechanism, a work-clamp, and its feeding mechanism, of a guiding-button for said work-clamp, a sliding plate by which said button is carried, a lever jointed at one end to said sliding plate and provided with a pin at its opposite end, an operating-rod arranged above the workplate and having a slot at its forward end to engage said pin, a lever to which the rear end and desire to secure by of said rod is jointed, a rotating cam for operating said last-namedlever, a spring to press against said rod, and a roller-stud or projection on the said work-clamp to engage said rod and move it into position to engage the pin on said first-named lever, substantially as set forth.

2. In a button-hole sewing-machine, the combination,with the stitch-forming mechanism, the work-clamp having the pin or roller 0', and feeding mechanism for said clamp, of the sliding plate I, the guiding-button J, carried thereby, the lever N, jointed to said sliding plate and having the pin a, the operatingrod M, having the slot at with wide and narrow portions, as shown, the spring m, the stop-pin m the lever L, the cam (Z,thc shaft D, the driving-shaft G, and the gears (Z and c, substantially as set forth.

In testimony whereof I atlix my signature in presence of two witnesses.

JOHN Q. A. llOUGlllON. Witnesses:

A. S. Bnownn, CARLETON E. SNELL. 

